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<h2><a href="closure_goog_module_moduleloadcallback.js.html">moduleloadcallback.js</a></h2>

<pre class="prettyprint lang-js">
<a name="line1"></a>// Copyright 2008 The Closure Library Authors. All Rights Reserved.
<a name="line2"></a>//
<a name="line3"></a>// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
<a name="line4"></a>// you may not use this file except in compliance with the License.
<a name="line5"></a>// You may obtain a copy of the License at
<a name="line6"></a>//
<a name="line7"></a>//      http://www.apache.org/licenses/LICENSE-2.0
<a name="line8"></a>//
<a name="line9"></a>// Unless required by applicable law or agreed to in writing, software
<a name="line10"></a>// distributed under the License is distributed on an &quot;AS-IS&quot; BASIS,
<a name="line11"></a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a name="line12"></a>// See the License for the specific language governing permissions and
<a name="line13"></a>// limitations under the License.
<a name="line14"></a>
<a name="line15"></a>/**
<a name="line16"></a> * @fileoverview A simple callback mechanism for notification about module
<a name="line17"></a> * loads. Should be considered package-private to goog.module.
<a name="line18"></a> *
<a name="line19"></a> */
<a name="line20"></a>
<a name="line21"></a>goog.provide(&#39;goog.module.ModuleLoadCallback&#39;);
<a name="line22"></a>
<a name="line23"></a>goog.require(&#39;goog.debug.entryPointRegistry&#39;);
<a name="line24"></a>goog.require(&#39;goog.debug.errorHandlerWeakDep&#39;);
<a name="line25"></a>
<a name="line26"></a>
<a name="line27"></a>
<a name="line28"></a>/**
<a name="line29"></a> * Class used to encapsulate the callbacks to be called when a module loads.
<a name="line30"></a> * @param {Function} fn Callback function.
<a name="line31"></a> * @param {Object=} opt_handler Optional handler under whose scope to execute
<a name="line32"></a> *     the callback.
<a name="line33"></a> * @constructor
<a name="line34"></a> */
<a name="line35"></a>goog.module.ModuleLoadCallback = function(fn, opt_handler) {
<a name="line36"></a>  /**
<a name="line37"></a>   * Callback function.
<a name="line38"></a>   * @type {Function}
<a name="line39"></a>   * @private
<a name="line40"></a>   */
<a name="line41"></a>  this.fn_ = fn;
<a name="line42"></a>
<a name="line43"></a>  /**
<a name="line44"></a>   * Optional handler under whose scope to execute the callback.
<a name="line45"></a>   * @type {Object|undefined}
<a name="line46"></a>   * @private
<a name="line47"></a>   */
<a name="line48"></a>  this.handler_ = opt_handler;
<a name="line49"></a>};
<a name="line50"></a>
<a name="line51"></a>
<a name="line52"></a>/**
<a name="line53"></a> * Completes the operation and calls the callback function if appropriate.
<a name="line54"></a> * @param {*} context The module context.
<a name="line55"></a> */
<a name="line56"></a>goog.module.ModuleLoadCallback.prototype.execute = function(context) {
<a name="line57"></a>  if (this.fn_) {
<a name="line58"></a>    this.fn_.call(this.handler_ || null, context);
<a name="line59"></a>    this.handler_ = null;
<a name="line60"></a>    this.fn_ = null;
<a name="line61"></a>  }
<a name="line62"></a>};
<a name="line63"></a>
<a name="line64"></a>
<a name="line65"></a>/**
<a name="line66"></a> * Abort the callback, but not the actual module load.
<a name="line67"></a> */
<a name="line68"></a>goog.module.ModuleLoadCallback.prototype.abort = function() {
<a name="line69"></a>  this.fn_ = null;
<a name="line70"></a>  this.handler_ = null;
<a name="line71"></a>};
<a name="line72"></a>
<a name="line73"></a>
<a name="line74"></a>// Register the browser event handler as an entry point, so that
<a name="line75"></a>// it can be monitored for exception handling, etc.
<a name="line76"></a>goog.debug.entryPointRegistry.register(
<a name="line77"></a>    /**
<a name="line78"></a>     * @param {function(!Function): !Function} transformer The transforming
<a name="line79"></a>     *     function.
<a name="line80"></a>     */
<a name="line81"></a>    function(transformer) {
<a name="line82"></a>      goog.module.ModuleLoadCallback.prototype.execute =
<a name="line83"></a>          transformer(goog.module.ModuleLoadCallback.prototype.execute);
<a name="line84"></a>    });
</pre>


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